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... independently of the type of fault or any event that happens in the system, provided that the whole system remains connected to the supply grid, i.e. the line breaker does not trip. For most practical cases, a more economical design can be achieved by only compensating the positive and negative sequ ...
... independently of the type of fault or any event that happens in the system, provided that the whole system remains connected to the supply grid, i.e. the line breaker does not trip. For most practical cases, a more economical design can be achieved by only compensating the positive and negative sequ ...
INTERNATIONAL STANDARD IEC 60076-1
... NOTE This requirement is normally not critical in public supply systems but may have to be considered in installations with considerable convertor loading. In such cases there is a conventional rule that the deformation shall neither exceed 5 % total harmonic content nor 1 % even harmonic content. A ...
... NOTE This requirement is normally not critical in public supply systems but may have to be considered in installations with considerable convertor loading. In such cases there is a conventional rule that the deformation shall neither exceed 5 % total harmonic content nor 1 % even harmonic content. A ...
Complete PDF Edition (762 KB)
... stress associated with power dissipation. Nonuniform current flow within an element will cause heat concentrations that can lead to element destruction at lower-than-expected energy duty. We therefore tested each element and discarded those exhibiting poor current uniformity. The elements were scree ...
... stress associated with power dissipation. Nonuniform current flow within an element will cause heat concentrations that can lead to element destruction at lower-than-expected energy duty. We therefore tested each element and discarded those exhibiting poor current uniformity. The elements were scree ...
- Irish Science Teachers` Association
... The generator consists of a rotor and a stator and therefore it is a full electromagnetic system so it can be operated in reverse so as to work as a motor allowing electrical energy to be converted into mechanical (rotational) energy. The motor option is used to power up the gas turbine during a sta ...
... The generator consists of a rotor and a stator and therefore it is a full electromagnetic system so it can be operated in reverse so as to work as a motor allowing electrical energy to be converted into mechanical (rotational) energy. The motor option is used to power up the gas turbine during a sta ...
Physics, Chapter 34: Alternating Currents
... When a steady potential difference is applied to a capacitor, current flows only while the capacitor is being charged. There is a transient rise of the potential difference across the terminals of the capacitor which occurs in an exponential manner, similar to the transient increase in current throu ...
... When a steady potential difference is applied to a capacitor, current flows only while the capacitor is being charged. There is a transient rise of the potential difference across the terminals of the capacitor which occurs in an exponential manner, similar to the transient increase in current throu ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... interfaces. The power electronic system also contributes to power quality problem. Under the deregulated environment, in which electric utilities are expected to compete with each other, the customer satisfaction becomes very important. The impact of power quality problems is increasingly felt by cu ...
... interfaces. The power electronic system also contributes to power quality problem. Under the deregulated environment, in which electric utilities are expected to compete with each other, the customer satisfaction becomes very important. The impact of power quality problems is increasingly felt by cu ...
AN-776 20 Watt Simple Switcher Forward Converter (Rev. A)
... complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the wa ...
... complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the wa ...
Isolated Continuous Conduction Mode Flyback
... winding. When the switch is turned off, a large voltage overshoot on the SW pin must be clamped below the drain to source the voltage rating of the internal 40-V MOSFET. The effect of the clamp when the switch turns off is shown in the VSW waveform in Figure 1. The clamping circuit limits VSW to the ...
... winding. When the switch is turned off, a large voltage overshoot on the SW pin must be clamped below the drain to source the voltage rating of the internal 40-V MOSFET. The effect of the clamp when the switch turns off is shown in the VSW waveform in Figure 1. The clamping circuit limits VSW to the ...
Current ramping an ignition coil primary not only opens up
... ond range. If the time is very much longer than that, the output of the coil will be affected. A slow falling edge typically indicates that something is wrong with the transistorized coil driver. The falling edge of the coil current is also quite interesting in another way. If you’ve ever wondered h ...
... ond range. If the time is very much longer than that, the output of the coil will be affected. A slow falling edge typically indicates that something is wrong with the transistorized coil driver. The falling edge of the coil current is also quite interesting in another way. If you’ve ever wondered h ...
7 Modeling Ferrite Core Losses
... observed. While the frequency exponent is fixed in this model, notice that frequency now appears in the exponent of the flux term, and the constant term. This allows the model to match the widening gap between the curves at higher frequency, without requiring frequency dependence in the x coefficien ...
... observed. While the frequency exponent is fixed in this model, notice that frequency now appears in the exponent of the flux term, and the constant term. This allows the model to match the widening gap between the curves at higher frequency, without requiring frequency dependence in the x coefficien ...
PCS100 AVC-20 Technical Catalogue
... provides power conditioning for many of the world’s foremost organizations, ensuring that the continuous operation of small and medium to large businesses are protected on a global scale. ABB’s Power Conditioning portfolio is a unique line up of low and medium voltage power conversion technology tha ...
... provides power conditioning for many of the world’s foremost organizations, ensuring that the continuous operation of small and medium to large businesses are protected on a global scale. ABB’s Power Conditioning portfolio is a unique line up of low and medium voltage power conversion technology tha ...
AN-6203 Applying SG6203 to Control a Synchronous Rectifier of a
... occurs, the voltage on IN+ is lower than that on IN- and the driving signal for the synchronous rectifier is turned off to prevent the excessive energy circulating between the primary and secondary. The internal current IIN+ and IIN- from IN+ and IN-, respectively, results in a DC value on these two ...
... occurs, the voltage on IN+ is lower than that on IN- and the driving signal for the synchronous rectifier is turned off to prevent the excessive energy circulating between the primary and secondary. The internal current IIN+ and IIN- from IN+ and IN-, respectively, results in a DC value on these two ...
Generator
... ring becomes the positive terminal. This is an AC generator. Operation of the simple AC machine as a generator. ...
... ring becomes the positive terminal. This is an AC generator. Operation of the simple AC machine as a generator. ...
NCP1351LEDGEVB Universal Input, 20W, LED Ballast Evaluation Board User's Manual
... LUXEON is a registered trademark of Philips Lumileds Lighting Company and Royal Philips Electronics of the Netherlands. Platinum DRAGON LED is a registered trademark of OSRAM Opto Semiconductors, Inc. XLamp is a registered trademark of Cree, Inc. ON Semiconductor and are registered trademarks of Sem ...
... LUXEON is a registered trademark of Philips Lumileds Lighting Company and Royal Philips Electronics of the Netherlands. Platinum DRAGON LED is a registered trademark of OSRAM Opto Semiconductors, Inc. XLamp is a registered trademark of Cree, Inc. ON Semiconductor and are registered trademarks of Sem ...
Transformer
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltages of alternating current in electric power applications.A varying current in the transformer's primary winding creates a varying magnetic flux in the transformer core and a varying magnetic field impinging on the transformer's secondary winding. This varying magnetic field at the secondary winding induces a varying electromotive force (EMF) or voltage in the secondary winding. Making use of Faraday's Law in conjunction with high magnetic permeability core properties, transformers can thus be designed to efficiently change AC voltages from one voltage level to another within power networks.Since the invention of the first constant potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electrical energy. A wide range of transformer designs are encountered in electronic and electric power applications. Transformers range in size from RF transformers less than a cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.